CVE-2022-43505

Privileged denial of service via control-flow flaw

Published Aug 11, 2023 · Updated Feb 13, 2025

Insufficient control-flow management in Intel processor BIOS firmware allows local users with privileged access to cause denial of service. Intel has not disclosed the affected firmware routine, the invalid control-flow transition, or the operation that triggers it. Exploitation requires local privileged access, and Intel does not state whether the resulting service interruption is a hang, crash, or reboot.

CVSS severity4.1
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient control-flow management in Intel processor BIOS firmware allows local users with privileged access to cause denial of service. Intel has not disclosed the affected firmware routine, the invalid control-flow transition, or the operation that triggers it. Exploitation requires local privileged access, and Intel does not state whether the resulting service interruption is a hang, crash, or reboot.

The record

CVE
CVE-2022-43505
Published
Aug 11, 2023
Updated
Feb 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-691
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.1Intel CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-691Insufficient Control Flow Management

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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